Wireless speaker



FIG. 1 is a front perspective view of the wireless speaker according to the present design;

FIG. 2 is a front elevational view of the wireless speaker of FIG. 1;

FIG. 3 is a rear elevational view of the wireless speaker of FIG. 1;

FIG. 4 is a right-side elevational view of the wireless speaker of FIG. 1;

FIG. 5 is a left-side elevational view of the wireless speaker of FIG. 1;

FIG. 6 is a top plan view of the wireless speaker of FIG. 1; and,

FIG. 7 is a bottom plan view of the wireless speaker of FIG. 1.

Broken lines showing features of the wireless speaker form no part of the claimed design. 

CLAIM The ornamental design for a wireless speaker, as shown and described. 